<!DOCTYPE html>
<html>
    <head>
        <title> 单击事件举例 </title> 
		<meta charset="utf-8" />
		<script type="text/javascript">
			function tell() {
				alert("弹出框提示");
			}
		</script>
    </head>

    <body>
        <input type="button" value="弹出提示框" onclick="tell()" />
    </body>
</html>
